Canon NB-5L IXY 830 IS Replacement Battery 3.7V 1120mAh

Canon IXY 830 IS / PowerShot S100 Series — 3.7V Li-ion Replacement Battery (NB-5L)

This is a 3.7V, 1120mAh Li-ion cell built to the NB-5L form factor. It fits the Canon IXY 830 IS, PowerShot S100, PowerShot S100V, Digital IXUS 800 IS, and over 45 additional Canon compact bodies. It slots into the battery compartment and connects to the same BMS handshake as the original cell.

• IXY / IXUS / PowerShot S100 compatibility: These Canon compact lines share the NB-5L footprint, 3.7V rail, and the same four-contact connector layout. The camera body uses those contacts to read cell state — voltage, temperature, and charge status — so the connector alignment and contact spacing must match exactly.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a PowerShot S100 body. The BMS accepted the cell without a rejection flag, and the charge termination cut off cleanly at full capacity with no thermal anomaly.
• First-use charge cycle on NB-5L bodies: Canon compact bodies that use the NB-5L sometimes calibrate the battery-remaining indicator during the first in-camera charge. Run one full charge inside the camera body or OEM charger before your first shoot to let the indicator map accurately to the new cell's discharge curve.

Canon BMS rejecting a third-party NB-5L cell on first install

Canon compact cameras check the cell's contact response before displaying a charge level. A new third-party cell that hasn't been through a charge cycle can sit at a resting voltage the camera interprets as an unrecognised or depleted cell. The body may show a blinking battery icon or refuse to power on entirely. The fix is to place the battery in the OEM charger first — once it completes a full charge, the resting voltage sits in the range the camera expects, and the rejection clears on next install.

Battery percentage jumping erratically during a shoot

The IXY 830 IS maps battery percentage to specific voltage thresholds on the NB-5L discharge curve. A new replacement cell discharges on a slightly different curve than the original, so the indicator can jump — for example, from 60% to 20% without warning. This isn't a faulty cell; it's the camera's indicator recalibrating to the new cell's actual discharge profile. After two or three full charge and discharge cycles, the indicator typically stabilises and tracks more accurately.